Jack



JACK

Filed Jan. 5, 1925 2 Sheets-Sheet 1 IN VEN TOR.

ATTORNEY.

Dec. 29, 1925- 1,567,203

c. STEINKAMPER JACK Filed Jan. 5, 1925 2 Sheets-Sheet 2 I NVENTOR.

ATTORNEY.

Patented Dec. 29, 1925.

UNITED STATES CARL STEINKAMPEB, OF CHICAGO, ILLINOIS.

JACK.

Application filed January 5, 1925- Serial No. 681.

ToaZZ whom it may concern:

Be it known that I, CARL STEI'NKAMPER, a citizen of the United States, residing at 1430 Wellington Avenue, Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Jacks, of WhlCl1 tllB following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

This invention relates to new and useful mprovements in jacks and more particularly to a jack operated by fluid pressure Which is especially adapted for use in raising motor vehicles and the like for doing repair work. The main obj ectof the present invention is the provision of a fluid operated jack which is disposed beneath the surface upon which the vehicle is positioned'so that either end of the vehicle may be moved to a raised position through engagement of the jack with the axles of the vehicle.

Another object of the invention is the provision of a fluid operated jack which may be readily operated by a single person and is so positioned that the same may be readily engaged with either axle of the vehicle for raising either end of the vehicle, and in addition thereto suitable means may be provided whereby the' vehicle is retained in proper position for enga ement by the jack.

With the above and other objects in view the invention consists in the novel features of construction, the combination and arrangement of parts hereinafter more fully set forth, and pointed out in the accompanying drawings, in which,

Figure 1, is a vertical section through the device, parts thereof being illustrated in cross section.

Figure 2, is a detail transverse section on the line 2-2 of Figure 1.

Figure 3, is a longitudinal section through the control valve.

Figure 4 is an elevation, partly in sectioi, of a modified form of the invention, an

Figure 5, is a detail section on the line 5-5 of Figure 4.

In carrying out my invention it is pre/ ferred to have a suitable pit 1- formed in the earth beneath a garage floor, or positioned beneath the second floor of an enclosure, or on the other hand this pit may be formed in the earth outside of an enclosure,

' but it is preferred to have the same located within an enclosure to protect the same from the weather. Upon opposite sides of the pit shape that the ordinary sized pneumatic vehicle wheel may be readily positioned therein and retain the vehicle in proper position so that one of the axles thereof may be readily engaged by the lifting jack.

Secured to opposite walls of the pit 1 and arranged in opposed relation are the brackets 3 which are designed to support the cylinder 4 by having the arcuate arms 5 formed on the inner ends of the brackets and positioned between theannular ribs 6 formed on the cylinder. The ends, of the arms 5 are provided with perforated .ears 7 adapted to be arranged in abutting relation and securely connected by means of the clamping bolts 8. I

Mounted for reciprocating movement in the cylinder 4.- is the piston 9 having the rod 10 connected thereto and extending through the upper end of the cylinder. The outer or upper end of the rod 10 has a cross arm 11 attached thereto and each end of the arm 11 has an arcuate bearing member 12 arran ed thereon which is adaptedto engage wit the axle 13. of .a vehicle positioned above the pit. In order to actuate the iston 9 a supply pipe 14 is connected to the lower end 0 the cylinder at a point beneath the .1 I form receiving cavities 2 of such size'and piston when the same is positioned at the ment wlth the two sections of the pipe 14 upon opposite sides of the valve so as to permit the fluid ressure to enter the cylinder 4 and move t e piston 9 upwardl therein. When the piston has reached tiie limit of its upward stroke, or the vehicle has been raised as far as vdesired, the fluid pressure is out off. When 'it is desired to lower the arm 11, the valve 15 is rotated to permit the escape of pressure, from the cylinder, through .the outlet 17 which communicates with the longitudinal bore 16, thus allowing the fluid pressure to be relieved from beneath the piston 9.

From the above it will be readily appar-- ent that I have provided a simple and eflicient device which can be quickly and readily operated for raising and lowering vehicles by the use of fluid pressure and the simplicity of 0 eration permits of the same. being readi y operated by a single person. a

In Figure 4 I have illustrated a slightly modified form of the invention with the same principle of operation involved, but illustrating the use ofia number of cylinders and piston rods operating fol-raising and lowering a single cross arm. This form of the invention is especially adaptedfor use on heavy trucks and the like wherein the weight isvsuch as to require a heavy fluid pressure and also requires the distribution of theraising power instead of restingall the weight on a single piston rod.

In Figure 4: it willbe noted that I have shown three cylinders having pistons 9' working therein and havingrods 10' connected thereto,the upper ends of which proect through the upper ends of the cylinders. The rod-10' of the center cylinder hasattached to'its upper end across arm 11' and the upper ends of the rods 10 in the end cylinders-are attached to the cross arm 11' at a point adjacent each end thereof, with hearing members 12'carried by theupper surface of the cross arm at a pointadjacent each end thereof. The cylinders 4' are supported in the pit'1'- by meansof the brackets '3'-which are'att ache'd to the fioor of the pit and engaged with the central portions of the cylinders in almost the same manner as in the preferred formof the invention.

Each bracket 3"- has an arcuate arm 5' at its upper end adapted to engage between the annular ribs 6 on the cylinders 4' and connected to the ends of the arms 5 are the clamping members 7'. The supply pipe 14' is connected to the lower end of each cylinder- 4'. through the branch pipes 18 and a valve-'15 is positioned in the pipe 14: and operates in the same manner as in the preferred form of the invention. Each cylinder, modified form of the invention, is provided at its lower end with a drain cook 19, whereby water or other liquid that might accuboth in the preferred form and in the my name this 15th day of December A. 1),,

modified form of the invention is carried out in the same manner as that set forth for the preferred form.

'It will 'beapparent'that I'have provided a device which will be inexpensive'to install and operate, but will be of great value for usein repairing motor vehicles, due to the time and labor saved through the my improved device.

While I haye shownf'and described the preferred formsof my'improved fluid jack itwill be readily apparent that various changes and alterations may be carried out without departing from the spirit of the invention or the scope of the appended claims; I I

Having thus described my invention, what I claim is:

1. A device of the character described, includingcylinders, spaced ribs carried thereby, a support bracket adjacent the cylinder having an arcuate arm fitted between said ribs, an arcuate clamping member fitted between the ribs and having its ends connected to the endsof the arcuate armforsupporting said cylinder, acrossbar at one end of .the cylinder, arcuate bearing members carried thereby and means connected to the cross-arm for moving the same relative to the cylinder, and manually controlled means foractuating said first means. v

' 2. A device of the character described, in-

use of eluding a cylinder, spaced ribs formed thereon intermediate its ends, a supporting bracket adjacent the cylinder means embracing the cylinder between said ribs and having connection with the bracket whereby to support the cylinder in anupright position, a piston movable in the cylinder, a piston rod connected thereto and movable through one end of the cylinder, a crossarm having connection with the rod for movement therewith, arcuate bearing mem- 

